1. Subway
With an initial $1,000 investment, 17-year-old Fred DeLuca and family friend Peter Buck opened Pete's Super Submarines in 1965. The duo changed the name to Subway a few years later and began franchising in 1974. Fast-forward 43 years, and the Bridgeport, Connecticut, sandwich shop has become the world's largest sub sandwich chain, boasting more than 30,000 restaurants in 87 countries.

2. McDonald's
At the age of 52, Ray Kroc pitched the idea of opening several quick-service restaurants to brothers Dick and Mac McDonald, owners of the McDonald's hamburger stand in San Bernardino, California. With their approval, Kroc opened the first restaurant/franchise in Des Plaines, Illinois, in 1955. Now the global food-service retailer has about 30,000 restaurants in more than 100 countries.

3. Liberty Tax Service
In 1997, after selling Jackson Hewitt Inc.--the tax-preparation service company he founded 15 years earlier--John Hewitt acquired a Canadian tax franchisor and established Liberty Tax Service. A year later, Hewitt expanded into the U.S. with five offices; at the close of 2008, the number of U.S.-based Liberty Tax Service franchises had grown to nearly 2,500.

4. Sonic Drive-In
In 1953, Troy Smith purchased the Top Hat Drive-In, a root beer stand in Shawnee, Oklahoma, where customers would park, buy food and eat in their cars. He expanded that concept into a restaurant with partner Charlie Pappe, introducing the "Sonic" name in 1959. Today, the $3 billion company operates more than 3,000 drive-ins in the U.S. and Mexico.

5. Intercontinental Hotels Group
In 1988, U.K.-based Bass (founded by William Bass in 1777) moved into the hospitality industry with the purchase of Holiday Inns International. The company focused on expanding its hotel properties and finally sold the brewery business in 2000. The InterContinental Hotels Group now owns seven brands and operates more than 4,000 hotels spanning nearly 100 countries.

6. Ace Hardware
Ace Hardware began in 1924, when Richard Hesse banded together with other Chicago-area hardware retailers to increase their collective buying power and profits. The company was incorporated in 1928, and 80 years later has evolved into one of the largest hardware cooperatives in the world, with more than 4,600 stores in seven countries.

7. Pizza Hut
While college students in Wichita, Kansas, Frank and Dan Carney were inspired to open a pizza parlor. So the brothers borrowed $600 from their mother and opened the first Pizza Hut in 1958. Now there are approximately 6,200 locations in the U.S. and more than 4,000 restaurants in 100 other countries around the world.

8. The UPS Store/Mail Boxes Etc.
Gerald Aul, Pat Senn and Robert Diaz founded Mail Boxes Etc. as an alternative to the U.S. Postal Service in 1980 and opened their first store in Carlsbad, California. In 2001, Mail Boxes Etc. became a subsidiary of The UPS Store and now runs a network of almost 6,000 franchises located in the U.S. and more than 40 other countries.

9. Circle K
Circle K's roots go back to 1951, when Fred Hervey purchased three Kay's Food Stores in El Paso, Texas. Hervey expanded the retail network over the next few decades and entered the international market in 1979. A franchise program was introduced in 1999, and now more than 6,000 Circle K sites operate around the world.

10. Papa John's
In 1984, John Schnatter knocked out a broom closet in the back of his father's tavern and began selling his pizzas to the tavern's customers. Due to the pizzas' popularity, he was able to expand into an adjoining space and open the first Papa John's restaurant in 1985. Today, there are more than 3,000 Papa John's restaurants worldwide.